Athermal Operation of Silicon Waveguides: Spectral, Second Order and Footprint Dependencies
Author(s)
Raghunathan, Vivek; Ye, Winnie N.; Hu, Juejun; Izuhara, Tomoyuki; Michel, Jurgen; Kimerling, Lionel C.; ... Show more Show less
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We report the design criteria and performance of Si ring
resonators for passive athermal applications in wavelength division
multiplexing (WDM). The waveguide design rules address i) positivenegative
thermo-optic (TO) composite structures, ii) resonant wavelength
dependent geometry to achieve constant confinement factor ( Γ ), and iii)
observation of small residual second order effects. We develop exact design
requirements for a temperature dependent resonant wavelength shift
(TDWS) of 0 pm/K and present prototype TDWS performance of 0.5pm/K.
We evaluate the materials selection tradeoffs between high-index contrast
(HIC) and low-index contrast (LIC) systems and show, remarkably, that
FSR and footprint become comparable under the constraint of athermal
design.
Date issued
2010-08Department
Massachusetts Institute of Technology. Materials Processing Center; Massachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Microphotonics CenterJournal
Optics Express
Publisher
Optical Society of America
Citation
Vivek Raghunathan, Winnie N. Ye, Juejun Hu, Tomoyuki Izuhara, Jurgen Michel, and Lionel Kimerling, "Athermal operation of Silicon waveguides: spectral, second order and footprint dependencies," Opt. Express 18, 17631-17639 (2010)
Version: Author's final manuscript
ISSN
1094-4087
Keywords
Integrated Optics